Previous answer is
Mumei(Tegai)

Special feature : here had been several swordsmith schools in Yamato province;
Tegai, Shikkake, Taima, Senjuin, Hosho. At a glance, a beautiful jitetsu
of this katana reminds us of Tegai Kanenaga.
The Tegai School swordsmiths tempered fine jitetsu from
the Kamakura period to the Nambokucho period.

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Appraisal Quiz #376 (February 26th, 2016)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged

Blade length : 70.30 cm or 27.67 inches.
Sori : 1.21 cm or 0.48 inches.
Mekugi :
Width at the hamachi : 2.97 cm or 1.16 inches.
Width at the Kissaki : 1.93 cm or 0.75 inches.
Kasane : 0.67 cm or 0.26 inches.
Shape : Regular size nice shape Katana with a cut trace.
Jitetsu : Koitame and Komokume hada well grained, and bright Utsuri appear.
Hamon : Nie base, Kogunome Midare.
In Ha, there are streams of faint sunagashi and kinsuji activities.
Boshi is Midare Komi, Togari gokoro shape.

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